Climatological Report (Daily)
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CDUS43 KLOT 160639
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
138 AM CDT SAT MAY 16 2015


...................................

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR MAY 15 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2015


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         76    355 PM  91    1962  70      6       55
  MINIMUM         57    126 AM  35    1895  48      9       40
  AVERAGE         67                        59      8       48

PRECIPITATION (IN)
  YESTERDAY        T             2.31 1915   0.12  -0.12     0.19
  MONTH TO DATE    3.05                      1.75   1.30     3.81
  SINCE MAR 1      7.02                      7.63  -0.61     8.36
  SINCE JAN 1      9.88                     11.15  -1.27    13.66

SNOWFALL (IN)
  YESTERDAY        0.0           0.0    MM   0.0    0.0      0.0
  MONTH TO DATE    0.0                       0.0    0.0      0.0
  SINCE MAR 1      7.1                       6.8    0.3     13.7
  SINCE JUL 1     50.7                      36.6   14.1     82.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        0                         7     -7       17
  MONTH TO DATE  105                       137    -32      128
  SINCE MAR 1   1475                      1470      5     1641
  SINCE JUL 1   6655                      6204    451     7056

 COOLING
  YESTERDAY        2                         1      1        0
  MONTH TO DATE   14                        13      1       16
  SINCE MAR 1     14                        23     -9       17
  SINCE JAN 1     14                        23     -9       17
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     W (260)
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION     S (170)
  AVERAGE WIND SPEED     7.8


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93           200 AM
 LOWEST     60           400 PM
 AVERAGE    77

..........................................................


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   70        94      1962
 MINIMUM TEMPERATURE (F)   48        33      1997


SUNRISE AND SUNSET
MAY 16 2015...........SUNRISE   530 AM CDT   SUNSET   806 PM CDT
MAY 17 2015...........SUNRISE   529 AM CDT   SUNSET   807 PM CDT


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




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